Graphite foams infiltrated with phase change materials as alternative materials for space and terrestrial thermal energy storage applications

Graphite foams infiltrated with phase change materials as alternative materials for space and... In this work, a numerical study is proposed to investigate and predict the thermal performance of graphite foams infiltrated with phase change materials, PCMs, for space and terrestrial energy storage systems. The numerical model is based on a volume averaging technique while a finite volume method has been used to discretize the heat diffusion equation. A line-by-line solver based on tri-diagonal matrix algorithm has been used to iteratively solve the algebraic discretization equations. Because of the high thermal conductivity of graphite foams, the PCM-foam system thermal performance has been improved significantly. For space applications, the average value of the output power of the new energy storage system has been increased by more than eight times. While for terrestrial applications, the average output power using carbon foam of porosity 97% is about five times greater than that for using pure PCM. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Carbon Elsevier

Graphite foams infiltrated with phase change materials as alternative materials for space and terrestrial thermal energy storage applications

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Publisher
Elsevier
Copyright
Copyright © 2007 Elsevier Ltd
ISSN
0008-6223
D.O.I.
10.1016/j.carbon.2007.11.003
Publisher site
See Article on Publisher Site

Abstract

In this work, a numerical study is proposed to investigate and predict the thermal performance of graphite foams infiltrated with phase change materials, PCMs, for space and terrestrial energy storage systems. The numerical model is based on a volume averaging technique while a finite volume method has been used to discretize the heat diffusion equation. A line-by-line solver based on tri-diagonal matrix algorithm has been used to iteratively solve the algebraic discretization equations. Because of the high thermal conductivity of graphite foams, the PCM-foam system thermal performance has been improved significantly. For space applications, the average value of the output power of the new energy storage system has been increased by more than eight times. While for terrestrial applications, the average output power using carbon foam of porosity 97% is about five times greater than that for using pure PCM.

Journal

CarbonElsevier

Published: Jan 1, 2008

References

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